Function strip_envelope

nodedb-array/src/sync/schema_crdt.rs:217–228

Strip the one-byte version prefix from an enveloped snapshot buffer. Returns a slice into `bytes` starting after the version byte, or an error if the buffer is empty or the version does not match [`LORO_FORMAT_VERSION`].

(bytes: &[u8])

/// Returns a slice into `bytes` starting after the version byte, or an error
/// if the buffer is empty or the version does not match [`LORO_FORMAT_VERSION`].
fn strip_envelope(bytes: &[u8]) -> ArrayResult<&[u8]> {
    match bytes.first() {
        None => Err(ArrayError::SegmentCorruption {
            detail: "loro snapshot envelope is empty".into(),
        }),
        Some(&v) if v != LORO_FORMAT_VERSION => Err(ArrayError::LoroSnapshotVersionMismatch {
            expected: LORO_FORMAT_VERSION,
            got: v,
        }),
        Some(_) => Ok(&bytes[1..]),
    }
}

// ─── Tests ───────────────────────────────────────────────────────────────────